4 ms·
So tempted to go and buy a magnet and copper pipe now!
by jurre 15y ago
So tempted to go and buy a magnet and copper pipe now!
- VMG 15y agoI have a bunch of strong magnets from old hard drives and I am thinking hard how this could finally be a good use of them. But the tube is opaque, so I can't see how I can make a toy out of it. I guess I have to buy a copper tube to find out.
- DanBC 15y agoPut strong magnet in small tupperware box. Put box on beach, collect fines of magnetic material. Transfer many fines to a clear pot, mix with mineral oil. Tape strong magnet to outside of clear pot, see magnetic field in 3D.
- ramidarigaz 15y agoThat sounds ridiculously fun. I may have to go do that. I just need a beach...
- deleted 15y ago[deleted]
- b_emery 15y agoabout any old sand box will also do (the real kind).
- DanBC 15y agoOr you can buy fine wire wool and snip it into tiny bits.
- HeyLaughingBoy 15y agoYou can just buy iron filings cheap from these guys: http://www.scientificsonline.com/catalogsearch/result/?q=iron+filings http://www.scientificsonline.com/catalogsearch/result/?q=iro...
- themenace 15y agoMagnetic visualizer sprays are also great fun -- assuming that you can still buy any of them. You can actually see the magnetically recorded data on floppies, the magnetic stripe on ATM cards, hotel card keys, driver's licenses, and analog data on audio tapes. In the case of digital data, it will look like bars and blanks. If you know the encoding format, you can visually figure out what's encoded there. Some commercial products were Magview, Magcheck, Ferro-see, and Sprague-Mag. I don't know if any of these are still available. The spray is iron powder suspended in a fluid (like trichlorotrifluoroethane) that evaporates rapidly and leaves magnetic particles oriented according to the magnetic field. The pattern can be made permanent by spraying with a fixative or hairspray, or lifted with cellophane tape.